Method of making channel-bars with taperless flanges.



H. SACK, DBOD.

A, SAOK, ADXINISTRATEIX. v METHOD or MAKING GHANNEL mas WITH TAPERLESS PLANGES.

939,171. Patented m 2,1909.

APPLICATION FILED 101K150, 1908.

. I 5111mm fqz witnuuo v @4 I I To all whom it may with Ta perless Flanges, of which the followupon further "a sectional view channel-bar; Fig. 2 is a front able,

- the metal is'so firmly pres tearing away from method the final stp and all partsvof the bar bein'g'of. the final HUGO sacx, or nusss'rinonr, GERMANY; ADELHEID SACK ADMINISTRATRIX or SAID HUGO SACK, DECEASED. I

METHOD 0i? MIA-KING CHANNEL-BARS WITH TAPERLESS FLANGES.

Specification of LettersP'ate nt.

Application filed November 30, 1908. Serial No. 465,413.

concern:

Be it known that I, HUGO SACK, a subject of the Emperor of Germany, .residin at Dusseldorf, Rhenish Prussia, Germany, have invented certain new and useful II the flanges are at right angles to the'web.

Improve ments in Methods of This permits the flanges't-o readily leave the grooves of the reducing rolls.

tion upper roll 4 and a lower roll 5. e upper roll hasa cylindrical pressure surface 6 and square shoulders 7. The lower .roll has a cylindrical surface 8 of a length slightly greater than the Widt of the finished channel-ibar shoulders Making Channel-Bars mg is a specification.

In the ship-building trade channel-bars are preferred the ta er of whose flanges is as small as possible. hannel-bars with ta p'erless flanges would be'most desirbut upto the presenttime'no practical method of prodficing them has been devised. If it be attempted toroll such bars by the ordinary method, employing pairs of grooved rolls, t e roll-grooves must have parallel walls. The inevitable result is that sed into the grooves that itcannot readily leave them, the flanges the web and remaining fonning'collars, so thatuse the rolls are broken. present invention is an improved of rolling a channel-bar witlifltaperless flanges.

Referring to and elsewhere,

mg conical surfaces 10. Th [bar is fed to -the rolls with flanges guided by the conical surfaces 10 of the lower roll, the lower corners of the 01131111 nel-bar being supported on the surface of the; lower roll, and

e preliminary the fianges are bent inward into paral- Jammed in the roll,

The The method of making channel-bars with which consists in first p g v ducm a preliminary bar with a transversel the' drawings; Figure 1 is oi a preliminary form-0f elevation of the adjacent portions of rolls o my improved method, showparallelism by simultaneously applying presou'ter faces of to the ,web. V

In testimon whereof, I aiiix my signature in presence o two witnesses.

. HUGQSACK; I \Vitnesses;

EUGENE A; Brnuns,

G. E, Moons.

lhe preliminary channehb'ar 1 is rolledvin grooved rolls; the flanges 2 being taper-less thickness. "The web 3 is'slightly-curved-but Patented Nov. 2, 1909.

its diverging aim to the convex side of the we and to the the flanges at points adjacent then squared up without substantial elongar by a vsecond set of rolls, comprising an 50 9 in. planes transverse to the axis of the roll; and outwardly-extendcylindrical g as it enters t e pass of the roll the web is flattened down elo 

